Control-valve for water-jacketed pumps.



W. V. TURNER. CONTROL VALVE FOR WATER JACKETBD PUMPS.

n f A PPLwuloN HLED AUG. 3, wos. 935,864.

Patented Many?, 1911.

WITN ESSS W. V. TURNER.

CONTROL VALVE FOR W ATER JAGKETED PUMPS.. rumanos PILBD AUG. 3. 1908.

vmenten man, 1911.

2 8HEBTS-BKBET 2.

l fannirnnsrnrns PATENT onirica.

WALTER V. TURNER. OF EDGEWOOD, PENNSYLVANIA. .ASSIGNOR TO THE lVES'ING- HOUSE AIR BRAKE COMPANY, F PITTSB IPENNSYLVANI jacketed pumps, and more particularly to a' construction of this character adapted for motor-drivenv nir compressors.

It has heretoforekbeen proposed to provide u wnter control device adapted to open the Water supply valve or close same according as the pump governor operates to cut the pump into or outl of action, so as to prevent en unnecessary Waste of water while the pum is not operating. Constructions of this emracter are however subject to the fault that wheneverfrorn any cause the elecpresses air.

is provided having the usual regulating diatrio current is not available to start the motor and pump whcn'the governor shifts to the cut in position, the water control device is nevertheless operated to open the water valve, so that a flow of water around the water jacket of thc. com )ressor follows which entails a correspon ing waste of watt-r.

'.lhe principal object of my invention is to provide a Water controlling device having means for automatically cutting oli` the flow of water to the pump at such times as the pump is not able to respond to the action of `the governor. For this purpose l contemplate the employment. of means operating ini' pendcntly of the governor u pon a` certain 'reduction in pump pressure less than the cutting in pressure, to cut otl1 the ov' of water to the water jacket.

ln the accompanying drawings. Figure l is a diagrammatic view oi' an electric motor air compressor equipment showing one forni, of my iu'iprovcmcnts applied thert'rto, and Fig. 2 a similar view with another coustruetion of my in'vention applied thereto.

According to Fig; 1 of the drawings the equipment may comprise an electric motor driven air compressor 1 connected by a pipe to a reservoir 3, into which the pump 1 com- .\n electric pump governor 4 Specicaton o! I-.etters Fatent.

nppuetien :ned August a, 190s. serial no. 446,536.

URG, PENNSYLVANIA, A CGRPORATION OF CQNTROL-VALVE EOE WATER-JACKETED PUMPS.

Patented Mar. 7, 1911.

phragm 5, subject on one sine to the pressure of an adjustable spring o. and having the chamber on the side ofthe diaphragm opposite to the springvconneeted by a pipe 8 to the. reservoir 3. The diaphragm 5 is adapted to actuate a valve 9 for controlling the admission and release of fluid under pressure to and from a piston 10 .which con.V trois an electric switch 11 for opening and closing the electric circuit for the coinpressor motor. The waterjacketof thceompresser 1 is provided with thensual overfionT pipe 12 and a water supply pipe 13. According to my invention the water supply pipe 13 is connected to water control valve device 1i, comprising a valve 15 for con: trollingr the admission of water from va source of suppl)r to the supply pi ie 13, the 'valve being operated by means o a piston 16 which is subject on one side to the pressure of a coil spring 17 and is actuated by varying the fluid pressure on the opposite side ther-cot. For thc purpose of controlling the admission ot lluid under pressure to the fluid pressure chamber 18 ot' the piston 1G a pressure. diaphragm 19 is provided which is subject on one side to the pressure of an adjustable spring 20 and having the chamber 21 on the oppositeside Connected by a pipe 22 with the reservoir 3. The diaphragm 19 operates a valve 23 which governs a port 24 for establishing communication from the chamber 21 to thepiston chamber 1S. The spring chamber of the diaphragm 19 is connected by a pipe Q5 with the piston chamber of the governor so that when the piston is in its cut out position the pipe .25 is open to Huid pressure below the piston, while in its out in position, the port opening of pipe is above the piston and consequently open to the atmosphere. T he tension of the spring 20 is adjusted to a few pounds less pressure than the. cutting in pressure at which the pump governor 4 is adjusted; for example, with the cutting in pressure 75 pounds the spring O may be sci' to T2 pounds. lVhen the pressure in the reservoir falls to 75 operates the switch 11 and the compressor motor is cut in. In the cut. in position of the governor the pipe opens above the piston 10 to the atmosphere, so that the Huid pressure in the sprlng chamber of the pounds the governor diaphragm -19 is reduced to atmospheric pressure through the pipe 25 and the miniland opens the valve to supply' water through the pipe 13ito the'water jacket of the pump. Upon the pressure in the reservoir attaining the cutting out degree the valve 9 of 'the pump governor is shifted and f fluid nii-,der pressure. is admitted to the actuating piston 10, shifting'same to the cut out position. Fluid under pressure is likewisc admitted to the' ipe 25 and thence flows to the spring c amber of the diaphragm 19, andthis fluid pressure 1n .iddition to the pressure ,of the spring causes the diaphragm to shift and seat the valve.

The fluid pressure in the chamber 18 then bleeds down through a very small vent port 26, so that the spring 17 acts to shift the piston 16 and seat the. Water control valve V15, thus cutting oil' the flow of Water to the Water jacket of the pump. If it 'should happen upon the reduction of resorvoir pressure to 75 pounds and the consequent actuation of the governor to the cut in position, that the compressor motor does not startl up, as where there is no current supply, then the .water valve will remain openonly so long as the fluid pressure in the reservoir and iu chamber 21 1s in excess of the pressure of the sprin 2t), since u on the reservoir pressure reducing to slightly less than 7 2 pounds the spring operates to close the valve 23 and thereby cause the piston 16 to scat the water control valve 15 and cut oif the tlovg of water.

In the construction illustrated in Fig. 2 the equipment is shown substantially as in 1, but in thiscase the diaphragm 19 is operated by varying the fluid pressure on the diaphragm in the chamber Z1, the opposite side thereof being subject only to the pressure or anadjustablc spring. According to this mode. of operation, I connect the chamber 2l hy a pipe 27 to a valve device 28, said valve device comprising a slide valve 29 adapted in one position to connect the port opening of pipe 27 to the vulve chamher 3() and in another position to connect same to an exhaust port 3l by way of a cavity in thc valve. A pistonl 33 is provided for operatingv the valve 29, constantly subject to rescrvoil pressure on the valve chamber side, the valve chamber being connested by a pipe. 3+ to the reservoir 3, and on the opposite side to the pressure of a spring The spring chamber of the`piston 33 is connected by pipe 3G with the piston chamhcr 'of the switch actuating piston 10, so that the port opening of the pipe 2 i sense/i is on one side orthe other of the piston, accordingas the same is in the cut out or cut in position. lt willnow be seen that when the pump governor is in tlie cut out'position,

as shown in the drawing, fluid under pressure is admitted through p ipe 36 to the spring chamber side of piston 33, so that the pipe 27 through cavity 32 with exhaust port.-

31. The fluid under pressure being thus ventedfrom diaphragm chamber 21, the da ph ragin spring acts to close the valve and thus cut ofi' the admission of fluid under pressure to the piston 16. 'The leakage of fluid from the chamber through the small port 26 permits thespring 1T to ,actuate the piston 16v and valve 15 so as to 4out oil the dow or' Water to the pump. Upon operation of the pump rz ,frovernor to cut vin the pump, the spring chamber of pistsn 33 is vented to the atmosphere through pipe 36, and thereupon, the fluid vpressure .on the valve chamber side of piston 33, being in excess of the pressure of spring 35 shifts the piston 33 and slidevalve 29 so that the port opening of pipe 27 is uncovered to the valve chamber 30 and fluid under pressure is admitted to the diaphragm chamber 21. The

ressure of the diaphragm spring being adjusted to three poundsor so less pressure than the cutting in pressure of the pump governor, as in t .e .first described construction, so long as the reservoir pressure is at or above its normal minimum, when the governor cuts in the diaphragm 19 is actuated and opens the' valve 23, so as to admit fluid under pressure to th'; piston 16 to operate the same and thus open the Watcrcontrol valve 15, but if the pressure in the reservoir drops below the cut in pressure so as to be less than the pressure of the diaphragm spring. which would be the case where the motor fails to respond to the pump governor cutting in, then the spring acts to close the valve 23 and cut off thc admission of air to the piston 16. The piston 16 thereupon operates to close the Water control valve 15 and'cut off the admission of Water to the water jacket of the pump.

It will now be apparent that by means of my improvements the waste of water is pre- A vented at times when the pump is not Working'and the pump governor is in' its cut in position, as soon as the pressure 1n the rcservoir falls oil' a slight amount below the' I cutting in point of the governor.

Having now described my iuvention,what I claim as new and desire to secure by Letters Patent, isz- 1. The combination with a water jacketed pump for compressing fluid, of means governed by the starting and stopping of. the

-l 2. The combination-with a pump provided with a 'Water jacket, a receptacle into which the piimplis adapted .to compressiiiiid. a governor operating according to the. degree of pressure in the receptacle for controlling the starting and stopping of the pump, of a valve mechanism operatingr upon Starting the pump for admitting water l 'r eviee` to the Water jacket of the pump and upon stopping t-he pump for cutting otf the flow of water thereto and means for preventing the admission of waterto the water jacket upon a predetermined reduction in pressure 1^. said receptacle. l

3. The combination with a- Waier jacketecl puuip and a receptacle into which the pump compresses fluid, of a pump governor operating' according to the degree of pressure of fluid in the receptacle for cutting said pump into and out of action, a valve mechanism operating according to the position of the governor for controlling the fiow o c water to the water 'acket of the puinp and means for cutting o the How of water to the' pump independently of the operation of the govorner.

4. The combination with a pump having :i Water jacket and a reservoir for receiving the tiuid compressed by the pump, of a governr operating at a predetermined reservoir pressure for cutting the pump into action, :i ,valve mechanism operated upon movement of the governor to its cut inpu- 1 sition for admitting water to the water jacket of the pump and means operated 'upon reduction of reservoir pressure to a degl-ei: less than the cutting in reservoir pressure while the governor is the compressor ioadniit Water to the water jacket of the compressor and means operai ing upon a predetermined reduction 1n pump pressure for cutting ofi the supply of in the cut in position forl cutting` oli' the admission of? `water to the water jacket.

iaier independently of the 'position of the governor. v

(i. The. combination with u water jai-keted 2 pump adapted to compresi lluiil into a receptacle and a governor ortlie pump opcrateri according?r to the degree. of tiuid pressure in the receptacle for starting and stopping the puiup. of a Yalv'edeViCc comprising a vulve for controlling the iiow of water through the water jackety of the pump and a movable abutment Ioperated b v tiuid under pref-:sure from the receptacle for actuating said valve device and means controlled bj.' the governor for :iL-o actuatingr said valve.

In a ivater controlling apparatus for water jaeketed pumps, the combination with agoi'ernor operated,according to the degree of pump pressure for cuttingr the pump into and out of action, of a valve for controlling the How of water through the pump water jacket, an abutment subject on one side to pump pressure for operatingr Said valve. a spring acting on the abutment to oppose the pump pressure. and means controlled by the pump governor for varying the iiiiiil pressure on the spring ride of said abutment tn thereb;v operate said water controlling valve.

S. The combination with a pump adapted to compress air into a reservoir and pruviiled with a ivatei jacket, of means for controlling the tion' of water through the Water jacl.et ot' the pump and operate( at one time upon au increase and at another time. upon a decrease in reservoir pressure for cutting oli' the How of water to said water jacket.

9. The combination with a water jueketed pump for compressing iiid and a governor for the pump, of a valve mechanism eoiitrolied by said governor for supplying Water to thewater jacket of the ump and means governed bv the degree o? pump pressure -for also eoutrollingjsaid valve mechanism,

l0. Thecoinbiiation\vith a water jaeketed Huid compi-casar and u governor therefor, of :i valve izwchanisiu -controlled by said governor tor supplying water to the water jacket ot the compressor and adapted to cut ofi' the supply ot water upon a predetermined reduction in the pressure of iliiid compressed by the compressor.

n testimony whereof I have hereunto set.

my hand. Y

` "LTER V. T' tNElt. 'itnesses:

R. l". Emmer, \V.\i. M.I Coin'. 

